Ah yes, turning off object mode does help.  Still some letters being cut off.  For example capital "A" at 12 point Arial.
Also, I see that the 'Full Text Justification' does work, but you have to use it on a full paragraph box, not just a single line box.

Hmmm...   At first I thought it might be an affect of anti-alias vs non-anti-alias, but upon further examination, I'm not sure. 

It seems like There needs to be an option to increase the space between characters.  In the screen pic above, it's 11 point Arial font, and most of the characters are 6 pixels-wide, but SC is only allowing 5 pixels per character, so the right side of each is getting chopped off.  I'm not sure about the issue of the first letter missing....  I couldn't replicate that effect.

RE Help file:  I image Mouser will want to work out all the bugs and such before redoing the manual.  I did see in the "Current Changes" log where blending was introduced a couple months ago...

Try changing the Blend Mode (bottom).
"Normal" should do the trick.